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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/C1/49" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter, from Jean Dominique Cassini [to the Royal Society]</dc:title>
  <dc:description>Autograph letter
Cassini discusses Auzout's hypothesis for the comet's motion 
A paper (in Latin) by Cassini is enclosed which provides his own observations of the recent comet in December 1664
There are marginal notes in another hand
Oldenburg endorsed the letter: 'An extract of a letter by Signor Cassini to a person of quality and communicated by Monsieur Auzout for the R Society'
Read to the Royal Society on 15 March 1665</dc:description>
  <dc:date>14 February 1665</dc:date>
</rdf:Description>